Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 12

Waning Crescent 26%

03:48

11:10

08 OK
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad

Sun - Rise: 08:07, Set: 16:09, Transit: 12:08. Moon - Rise: 03:48, Set: 11:10. Civil Dark: 16:50 - 07:26. Nautical Dark: 17:33 - 06:42. Astro Dark: 18:15 - 06:01

Total Clouds (% Sky Obscured)

31
47
58
68
100
100
95
74
56
57
43
52
92
89
82
61
51
87
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

31
47
56
61
54
60
73
62
54
53
40
46
41
45
51
51
51
54
58
61
71
71
63
66

Medium Clouds (% Sky Obscured)

31
47
58
68
100
100
95
74
3
0
0
0
0
0
15
8
0
0
0
0
3
88
98
100

High Clouds (% Sky Obscured)

31
47
58
68
100
55
50
26
3
2
3
8
39
33
24
0
0
48
100
100
100
100
100
100

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

None
None
None
None
None
None
Very Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

0
0
0
0
4
21
50
19
9
10
3
9
0
0
0
0
0
0
0
1
0
0
0
0

Precipitation Amount (mm)

0
0
0
0
0
0
0.2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

14
15
14
14
16
16
16
15
15
15
15
13
13
12
12
10
10
9
9
9
9
9
9
9

Chance of Frost

Temperature (°C)

8
8
9
9
10
10
10
10
10
10
9
10
9
9
9
8
7
7
6
6
6
6
7
7

Feels Like (°C)

2
3
3
4
5
5
6
6
5
5
5
5
5
6
5
5
5
5
4
3
2
2
3
4

Dew Point (°C)

5
5
6
6
7
8
8
7
7
7
7
7
7
6
6
6
6
6
6
6
6
6
6
6

Relative Humidity (%)

81
81
82
82
82
85
85
83
82
84
85
82
84
84
78
85
91
94
94
94
96
96
94
90

Pressure (mb)

999
1000
1000
1000
1000
1000
999
1000
1000
1000
1000
1001
1001
1002
1002
1003
1003
1004
1004
1004
1004
1004
1004
1004

Ozone (du)

306
303
304
309
312
313
317
319
321
325
328
326
325
324
326
327
329
325
323
321
319
320
322
325

Tuesday 13

Waning Crescent 24%

05:02

11:27

08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad

Sun - Rise: 08:06, Set: 16:11, Transit: 12:08. Moon - Rise: 05:02, Set: 11:27. Civil Dark: 16:51 - 07:25. Nautical Dark: 17:35 - 06:42. Astro Dark: 18:16 - 06:00

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
93
82
85
90
90
90
90
91
91
91
83

Low Clouds (% Sky Obscured)

78
85
77
66
73
77
82
88
100
96
87
86
92
93
82
85
80
83
90
75
81
86
86
80

Medium Clouds (% Sky Obscured)

100
100
100
100
97
96
100
100
95
83
100
95
100
90
70
65
75
75
80
75
75
73
63
50

High Clouds (% Sky Obscured)

100
100
100
100
100
80
100
100
97
100
100
100
84
68
7
1
40
45
30
1
0
0
2
3

ISS Passover

Visibility (miles)

9
9
9
3
5
9
4
5
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

None
None
None
Light Rain
None
Light Rain
Very Light Rain
Very Light Rain
Light Rain
Very Light Rain
None
None
None
None
Very Light Rain
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

10
20
53
66
47
73
75
72
95
78
56
44
52
56
66
54
44
22
40
42
22
15
17
19

Precipitation Amount (mm)

0
0
0
0.4
0
0.4
0.3
0.3
0.8
0.3
0
0
0
0
0.3
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

9
11
11
11
10
14
15
16
11
12
11
13
12
11
10
11
10
9
8
8
7
7
8
8

Chance of Frost

Temperature (°C)

8
8
8
8
8
9
9
10
9
9
7
7
6
6
5
5
5
5
4
4
4
4
3
3

Feels Like (°C)

3
4
4
4
5
4
4
4
5
4
3
2
1
1
2
2
3
2
2
2
2
1
1
1

Dew Point (°C)

6
7
7
8
8
8
8
8
8
7
5
4
3
3
3
3
3
3
3
3
3
2
2
2

Relative Humidity (%)

90
95
93
95
96
93
93
90
91
88
87
81
79
83
86
86
85
86
89
89
91
91
91
91

Pressure (mb)

1004
1004
1004
1003
1002
1001
1000
1000
1000
1000
1001
1001
1002
1002
1003
1003
1003
1003
1004
1005
1005
1005
1006
1007

Ozone (du)

324
327
329
330
328
325
330
329
330
331
330
328
333
348
361
366
371
368
358
353
344
333
323
315

Wednesday 14

Waning Crescent 18%

06:11

11:51

08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad

Sun - Rise: 08:05, Set: 16:12, Transit: 12:09. Moon - Rise: 06:11, Set: 11:51. Civil Dark: 16:52 - 07:24. Nautical Dark: 17:36 - 06:41. Astro Dark: 18:17 - 06:00

Total Clouds (% Sky Obscured)

96
91
96
97
96
89
100
100
100
100
100
100
98
99
100
100
99
99
98
88
80
72
66
91

Low Clouds (% Sky Obscured)

79
73
66
62
63
68
69
64
70
73
63
82
70
91
61
65
74
84
97
80
78
61
56
68

Medium Clouds (% Sky Obscured)

39
36
35
95
94
87
76
93
100
100
99
100
93
90
98
97
77
47
93
80
71
60
16
27

High Clouds (% Sky Obscured)

59
49
60
65
60
60
100
98
100
100
96
100
86
93
100
71
10
48
2
16
2
0
27
57

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

9
8
5
1
0
0
0
1
4
0
0
5
4
0
0
1
17
43
46
36
29
14
8
2

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

7
7
6
6
7
7
6
6
6
6
6
7
8
8
9
9
10
11
12
13
12
12
13
11

Chance of Frost

Temperature (°C)

3
3
4
5
6
6
6
6
5
5
4
4
4
4
4
4
3
3
4
4
4
5
5
5

Feels Like (°C)

1
-1
1
2
2
2
2
2
1
0
0
-1
-1
-1
-2
-1
-2
-2
-2
-2
-2
-1
-1
1

Dew Point (°C)

2
2
2
2
2
2
3
3
3
3
2
2
2
2
2
2
2
1
2
2
2
3
3
4

Relative Humidity (%)

91
89
86
80
78
78
82
85
86
86
85
86
85
86
85
86
88
86
86
86
88
88
89
94

Pressure (mb)

1008
1009
1009
1010
1009
1009
1009
1009
1009
1009
1009
1009
1009
1008
1008
1008
1007
1007
1006
1005
1005
1004
1004
1004

Ozone (du)

311
311
312
310
309
311
312
314
318
319
324
324
324
322
322
327
331
333
331
334
335
339
340
349

Thursday 15

Waning Crescent 11%

07:09

12:27

08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad

Sun - Rise: 08:04, Set: 16:14, Transit: 12:09. Moon - Rise: 07:09, Set: 12:27. Civil Dark: 16:54 - 07:24. Nautical Dark: 17:37 - 06:40. Astro Dark: 18:19 - 05:59

Total Clouds (% Sky Obscured)

95
100
100
99
100
100
100
100
100
100
100
100
100
94
89
81
80
76
77
71
67
66
57
46

Low Clouds (% Sky Obscured)

66
73
79
73
79
78
73
82
91
100
88
75
64
64
64
64
61
59
56
54
49
47
55
46

Medium Clouds (% Sky Obscured)

35
45
45
45
42
100
100
100
100
100
100
100
100
71
19
45
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

85
100
100
99
100
100
100
75
50
40
40
2
45
0
2
45
40
39
0
0
0
0
0
0

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
2
2
4
6
2
9
9
9
9
9
9
9
2
9
9
9

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

None
None
None
None
None
None
None
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

1
2
0
0
15
29
48
95
95
95
95
95
95
93
64
30
23
13
6
9
2
0
0
0

Precipitation Amount (mm)

0
0
0
0
0
0
0
0.7
1.2
1.2
0.9
1.4
1.3
0.6
0.3
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

10
9
9
8
9
8
6
6
8
8
8
9
8
11
11
12
13
11
13
12
11
10
10
10

Chance of Frost

Temperature (°C)

6
6
6
7
7
7
7
7
6
6
6
6
6
6
6
6
6
5
4
3
3
4
3
2

Feels Like (°C)

1
2
2
3
4
3
3
4
2
2
1
1
2
1
1
1
-2
-1
-5
-4
-4
-3
-2
-3

Dew Point (°C)

4
5
6
6
6
6
6
6
6
6
5
5
5
5
5
5
4
4
2
2
2
1
1
1

Relative Humidity (%)

91
94
94
94
91
91
93
94
98
96
93
91
94
93
93
90
86
93
89
93
91
85
83
93

Pressure (mb)

1004
1004
1004
1004
1003
1002
1001
1001
1000
999
999
998
998
997
996
996
996
996
997
999
1000
1001
1002
1003

Ozone (du)

357
359
363
364
361
364
365
365
365
366
369
371
372
373
369
369
369
369
370
376
383
391
401
410

Friday 16

Waning Crescent 6%

07:54

13:16

08 Bad
09 Bad
10 Bad
11 OK
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad

Sun - Rise: 08:03, Set: 16:16, Transit: 12:09. Moon - Rise: 07:54, Set: 13:16. Civil Dark: 16:55 - 07:23. Nautical Dark: 17:39 - 06:39. Astro Dark: 18:20 - 05:58

Total Clouds (% Sky Obscured)

48
42
39
38
46
66
67
59
89
100
92
90
88
94
97
99
98
97
96
95
90
84
87
91

Low Clouds (% Sky Obscured)

48
42
39
38
46
50
52
44
39
34
80
81
82
87
92
96
95
95
87
82
74
65
68
67

Medium Clouds (% Sky Obscured)

0
0
0
0
17
50
7
23
42
91
62
44
28
43
55
68
70
72
75
73
71
68
64
60

High Clouds (% Sky Obscured)

0
0
0
2
9
3
1
2
1
16
43
38
32
38
44
51
42
31
17
14
11
11
9
11

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
6
9
9
9
9
9
9
9
9
9
9
9
9
9
9

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
Very Light Rain
None
None

Precipitation Probability (%)

0
0
0
0
0
3
18
17
14
14
14
7
1
2
3
0
9
11
4
17
25
32
22
11

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.2
0
0

Wind Speed/Direction (mph)

10
9
10
11
12
12
12
13
12
11
11
7
7
6
6
6
5
6
6
6
6
6
6
7

Chance of Frost

Temperature (°C)

2
2
3
4
6
6
6
7
6
6
5
5
5
5
4
4
4
4
4
4
4
4
4
4

Feels Like (°C)

-2
-1
0
1
3
2
1
1
2
1
1
1
0
1
1
1
1
-1
-1
0
0
1
1
0

Dew Point (°C)

1
1
2
2
3
4
4
4
4
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3

Relative Humidity (%)

91
91
89
85
85
85
85
84
83
83
82
83
85
88
89
93
94
94
94
94
94
96
96
96

Pressure (mb)

1004
1004
1005
1005
1006
1006
1006
1006
1006
1006
1007
1005
1006
1006
1007
1007
1007
1007
1008
1008
1008
1008
1009
1009

Ozone (du)

413
416
420
421
422
415
413
412
409
404
404
407
410
413
417
420
423
425
427
429
432
434
437
437

Saturday 17

Waning Crescent 2%

07:54

14:21

08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad

Sun - Rise: 08:02, Set: 16:17, Transit: 12:10. Moon - Rise: 07:54, Set: 14:21. Civil Dark: 16:57 - 07:22. Nautical Dark: 17:40 - 06:39. Astro Dark: 18:21 - 05:58

Total Clouds (% Sky Obscured)

96
96
98
99
96
97
97
97
96
97
98
99
99
98
98
96
95
92
89
88
88
88
83
81

Low Clouds (% Sky Obscured)

70
74
81
89
87
86
91
94
96
97
97
96
97
96
95
93
90
87
83
83
83
83
83
81

Medium Clouds (% Sky Obscured)

56
55
55
48
49
54
59
52
48
40
50
60
70
45
24
4
2
1
0
0
0
0
0
0

High Clouds (% Sky Obscured)

14
18
22
25
32
38
45
34
21
12
17
19
20
14
8
1
0
0
0
0
0
0
15
26

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

2
7
8
9
7
5
4
6
9
11
15
16
14
17
18
16
14
13
12
13
12
11
11
9

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

7
7
8
9
10
10
9
9
8
7
6
7
7
7
6
6
6
6
6
6
6
6
5
5

Chance of Frost

Temperature (°C)

4
4
4
5
6
6
6
7
6
6
5
5
5
5
5
5
5
5
5
5
4
4
4
4

Feels Like (°C)

0
0
0
0
-0
2
2
2
2
1
2
1
2
2
2
2
1
1
1
1
1
1
1
1

Dew Point (°C)

3
3
3
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
3
3
2
2
2

Relative Humidity (%)

96
96
94
91
88
86
85
84
86
86
88
91
93
94
93
93
93
93
91
89
88
88
88
88

Pressure (mb)

1010
1010
1010
1010
1010
1010
1010
1010
1010
1010
1011
1011
1011
1011
1011
1011
1011
1010
1010
1010
1010
1010
1010
1010

Ozone (du)

437
438
435
433
430
431
431
431
429
426
423
424
424
425
426
426
427
430
432
435
436
437
439
440

Sunday 18

New Moon 0%

08:25

15:36

Sun - Rise: 08:01, Set: 16:19, Transit: 12:10. Moon - Rise: 08:25, Set: 15:36. Civil Dark: 16:59 - 07:21. Nautical Dark: 17:42 - 06:38. Astro Dark: 18:23 - 05:57

Total Clouds (% Sky Obscured)

Low Clouds (% Sky Obscured)

Medium Clouds (% Sky Obscured)

High Clouds (% Sky Obscured)

ISS Passover

Visibility (miles)

Fog (%)

Precipitation Type

Precipitation Probability (%)

Precipitation Amount (mm)

Wind Speed/Direction (mph)

Chance of Frost

Temperature (°C)

Feels Like (°C)

Dew Point (°C)

Relative Humidity (%)

Pressure (mb)

Ozone (du)

Forecast for Boston, Lincolnshire, United Kingdom (52.98,-0.02)

Generated: 12/01/26 08:16:20. Forecast: 12/01/26 to 18/01/26. Timezone: UTC+0.00